59 lines
1.5 KiB
C
Executable File
59 lines
1.5 KiB
C
Executable File
/***********************************************************************
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* mexqprod.c : C mex file
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*
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* jj = mexqprod(blk);
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*
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* Input: blk = [n1, n2, ..., nk]
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*
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* Output: [1 1...1 2 2 ... 2 .... k k ...k]'
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* n1 n2 nk
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*
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* SDPT3: version 3.0
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* Copyright (c) 1997 by
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* K.C. Toh, M.J. Todd, R.H. Tutuncu
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* Last Modified: 2 Feb 01
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***********************************************************************/
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#include <math.h>
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#include <mex.h>
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/**********************************************************
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*
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***********************************************************/
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void mexFunction(
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int nlhs, mxArray *plhs[],
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int nrhs, const mxArray *prhs[] )
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{ double *blksize, *jj;
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int k, l, blkdim, numblk, cols, idx;
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/* CHECK FOR PROPER NUMBER OF ARGUMENTS */
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if (nrhs !=1){
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mexErrMsgTxt("mexqprod: requires 1 input arguments."); }
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if (nlhs > 1){
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mexErrMsgTxt("mexqprod: requires 1 output argument."); }
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/* CHECK THE DIMENSIONS */
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if (mxIsCell(prhs[0])) {
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mexErrMsgTxt("mexqprod: blk must be a double array."); }
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numblk = mxGetN(prhs[0]);
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blksize = mxGetPr(prhs[0]);
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cols = 0;
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for (k=0; k<numblk; k++) {
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cols = cols + (int)blksize[k];
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}
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plhs[0] = mxCreateDoubleMatrix(cols,1,mxREAL);
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jj = mxGetPr(plhs[0]);
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idx = 0;
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for (k=1; k<=numblk; k++) {
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blkdim = (int)blksize[k-1];
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for (l=0; l<blkdim; l++) { jj[idx] = k; idx++; }
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}
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return;
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}
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/**********************************************************/
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